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Finding the Fourth Proportional to 157,769.72, 236,277.48 and 91,007.48

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Solution

The fourth proportional to 157,769.72, 236,277.48 and 91,007.48 is: 136,293.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,769.72 : 236,277.48 = 91,007.48 : x
  2. Step 2: Convert to fraction form
    157,769.72/236,277.48 = 91,007.48/x
  3. Step 3: Cross multiply
    157,769.72x = 236,277.48 × 91,007.48
  4. Step 4: Simplify right side
    157,769.72x = 21,503,018,035.55
  5. Step 5: Solve for x
    x = 21,503,018,035.55/157,769.72
  6. Step 6: Final answer
    x = 136,293.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.